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root/radiance/ray/src/gen/xform.c
Revision: 1.14
Committed: Fri Jul 19 09:43:40 1991 UTC (32 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.13: +122 -202 lines
Log Message:
moved readfargs() and freefargs() to library

File Contents

# Content
1 /* Copyright (c) 1991 Regents of the University of California */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ LBL";
5 #endif
6
7 /*
8 * xform.c - program to transform object files.
9 * Transformations must preserve aspect ratio.
10 *
11 * 10/19/85
12 * 11/6/86 Finally added error checking!
13 */
14
15 #include "standard.h"
16
17 #include <ctype.h>
18
19 #include "object.h"
20
21 #include "otypes.h"
22
23 int xac; /* global xform argument count */
24 char **xav; /* global xform argument pointer */
25 int xfa; /* start of xf arguments */
26
27 XF tot; /* total transformation */
28 int reverse; /* boolean true if scene inverted */
29
30 int expand = 0; /* boolean true to expand commands */
31
32 char *newmod = NULL; /* new modifier for surfaces */
33
34 char *idprefix = NULL; /* prefix for object identifiers */
35
36 #define ALIAS NUMOTYPE /* put alias at end of array */
37
38 #define NUMTYPES (NUMOTYPE+1) /* total number of object types */
39
40 FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */
41
42 extern char *malloc();
43
44 #define progname (xav[0])
45
46
47 main(argc, argv) /* get transform options and transform file */
48 int argc;
49 char *argv[];
50 {
51 FILE *fopen();
52 FILE *fp;
53 int a;
54 /* check for array */
55 for (a = 1; a < argc; a++)
56 if (!strcmp(argv[a], "-a"))
57 return(doarray(argc, argv, a));
58
59 initotypes();
60
61 for (a = 1; a < argc; a++) {
62 if (argv[a][0] == '-')
63 switch (argv[a][1]) {
64 case 'm':
65 if (argv[a][2] || a+1 >= argc)
66 break;
67 newmod = argv[++a];
68 continue;
69 case 'n':
70 if (argv[a][2] || a+1 >= argc)
71 break;
72 idprefix = argv[++a];
73 continue;
74 case 'e':
75 if (argv[a][2])
76 break;
77 expand = 1;
78 continue;
79 }
80 break;
81 }
82
83 xav = argv;
84 xfa = a;
85
86 a += xf(&tot, argc-a, argv+a);
87
88 if (reverse = tot.sca < 0.0)
89 tot.sca = -tot.sca;
90
91 if (a < argc && argv[a][0] == '-') {
92 fprintf(stderr, "%s: command line error at '%s'\n",
93 argv[0], argv[a]);
94 exit(1);
95 }
96
97 xac = a;
98 /* simple header */
99 putchar('#');
100 for (a = 0; a < xac; a++)
101 printf(" %s", xav[a]);
102 putchar('\n');
103 /* transform input */
104 if (xac == argc)
105 xform("standard input", stdin);
106 else
107 for (a = xac; a < argc; a++) {
108 if ((fp = fopen(argv[a], "r")) == NULL) {
109 fprintf(stderr, "%s: cannot open \"%s\"\n",
110 progname, argv[a]);
111 exit(1);
112 }
113 xform(argv[a], fp);
114 fclose(fp);
115 }
116
117 return(0);
118 }
119
120
121 doarray(ac, av, ai) /* make array */
122 char **av;
123 int ac, ai;
124 {
125 char *newav[256], **avp;
126 char newid[128], repts[32];
127 char *oldid = NULL;
128 int i, err;
129
130 avp = newav+2;
131 avp[0] = av[0];
132 for (i = 1; i < ac; i++)
133 if (!strcmp(av[i-1], "-n")) {
134 oldid = av[i];
135 avp[i] = newid;
136 } else
137 avp[i] = av[i];
138 avp[ai] = "-i";
139 avp[ai+1] = repts;
140 avp[i] = NULL;
141 if (oldid == NULL) {
142 newav[0] = av[0];
143 newav[1] = "-n";
144 newav[2] = newid;
145 avp = newav;
146 ac += 2;
147 }
148 err = 0;
149 for (i = 0; i < atoi(av[ai+1]); i++) {
150 if (oldid == NULL)
151 sprintf(newid, "a%d", i);
152 else
153 sprintf(newid, "%s.%d", oldid, i);
154 sprintf(repts, "%d", i);
155 err |= main(ac, avp);
156 }
157 return(err);
158 }
159
160
161 xform(name, fin) /* transform stream by tot.xfm */
162 char *name;
163 register FILE *fin;
164 {
165 register int c;
166
167 while ((c = getc(fin)) != EOF) {
168 if (isspace(c)) /* blank */
169 continue;
170 if (c == '#') { /* comment */
171 putchar(c);
172 do {
173 if ((c = getc(fin)) == EOF)
174 return;
175 putchar(c);
176 } while (c != '\n');
177 } else if (c == '!') { /* command */
178 ungetc(c, fin);
179 xfcomm(name, fin);
180 } else { /* object */
181 ungetc(c, fin);
182 xfobject(name, fin);
183 }
184 }
185 }
186
187
188 xfcomm(fname, fin) /* transform a command */
189 FILE *fin;
190 {
191 FILE *popen();
192 char *fgetline();
193 FILE *pin;
194 char buf[512];
195 int i;
196
197 fgetline(buf, sizeof(buf), fin);
198 if (expand) {
199 if (xac > 2) {
200 if ((pin = popen(buf+1, "r")) == NULL) {
201 fprintf(stderr,
202 "%s: (%s): cannot execute \"%s\"\n",
203 progname, fname, buf);
204 exit(1);
205 }
206 xform(buf, pin);
207 pclose(pin);
208 } else {
209 fflush(stdout);
210 system(buf+1);
211 }
212 } else {
213 printf("\n%s", buf);
214 if (xac > 1) {
215 printf(" | %s -e", xav[0]);
216 for (i = 1; i < xac; i++)
217 printf(" %s", xav[i]);
218 }
219 putchar('\n');
220 }
221 }
222
223
224 xfobject(fname, fin) /* transform an object */
225 char *fname;
226 FILE *fin;
227 {
228 char typ[16], nam[MAXSTR];
229 int fn;
230 /* modifier and type */
231 fscanf(fin, "%s %s", nam, typ);
232 if ((fn = otype(typ)) < 0) {
233 fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n",
234 progname, fname, typ);
235 exit(1);
236 }
237 printf("\n%s %s ", newmod!=NULL && issurface(fn) ? newmod : nam, typ);
238 /* object name */
239 fscanf(fin, "%s", nam);
240 if (idprefix != NULL && issurface(fn))
241 printf("%s.%s\n", idprefix, nam);
242 else
243 printf("%s\n", nam);
244 /* transform arguments */
245 if ((*ofun[fn].funp)(fin) < 0) {
246 fprintf(stderr, "%s: (%s): bad %s \"%s\"\n",
247 progname, fname, ofun[fn].funame, nam);
248 exit(1);
249 }
250 }
251
252
253 o_default(fin) /* pass on arguments unchanged */
254 FILE *fin;
255 {
256 register int i;
257 FUNARGS fa;
258
259 if (readfargs(&fa, fin) <= 0)
260 return(-1);
261 /* string arguments */
262 printf("%d", fa.nsargs);
263 for (i = 0; i < fa.nsargs; i++)
264 printf(" %s", fa.sarg[i]);
265 printf("\n");
266 #ifdef IARGS
267 /* integer arguments */
268 printf("%d", fa.niargs);
269 for (i = 0; i < fa.niargs; i++)
270 printf(" %d", fa.iarg[i]);
271 printf("\n");
272 #endif
273 /* float arguments */
274 printf("%d", fa.nfargs);
275 for (i = 0; i < fa.nfargs; i++)
276 printf(" %18.12g", fa.farg[i]);
277 printf("\n");
278 freefargs(&fa);
279 return(0);
280 }
281
282
283 addxform(fin) /* add xf arguments to strings */
284 FILE *fin;
285 {
286 register int i;
287 FUNARGS fa;
288
289 if (readfargs(&fa, fin) <= 0)
290 return(-1);
291 /* string arguments */
292 printf("%d", fa.nsargs + xac-xfa);
293 for (i = 0; i < fa.nsargs; i++)
294 printf(" %s", fa.sarg[i]);
295 for (i = xfa; i < xac; i++) /* add xf arguments */
296 printf(" %s", xav[i]);
297 printf("\n");
298 #ifdef IARGS
299 /* integer arguments */
300 printf("%d", fa.niargs);
301 for (i = 0; i < fa.niargs; i++)
302 printf(" %d", fa.iarg[i]);
303 printf("\n");
304 #endif
305 /* float arguments */
306 printf("%d", fa.nfargs);
307 for (i = 0; i < fa.nfargs; i++)
308 printf(" %18.12g", fa.farg[i]);
309 printf("\n");
310 freefargs(&fa);
311 return(0);
312 }
313
314
315 int
316 otype(ofname) /* get object function number from its name */
317 register char *ofname;
318 {
319 register int i;
320
321 for (i = 0; i < NUMTYPES; i++)
322 if (!strcmp(ofun[i].funame, ofname))
323 return(i);
324
325 return(-1); /* not found */
326 }
327
328
329 alias(fin) /* transfer alias */
330 FILE *fin;
331 {
332 char aliasnm[MAXSTR];
333
334 if (fscanf(fin, "%s", aliasnm) != 1)
335 return(-1);
336 printf("\t%s\n", aliasnm);
337 return(0);
338 }
339
340
341 m_glow(fin) /* transform arguments for proximity light */
342 FILE *fin;
343 {
344 FUNARGS fa;
345
346 if (readfargs(&fa, fin) <= 0)
347 return(-1);
348 if (fa.nsargs != 0 || fa.nfargs != 4)
349 return(-1);
350 printf("0\n0\n4");
351 printf(" %18.12g %18.12g %18.12g",
352 fa.farg[0], fa.farg[1], fa.farg[2]);
353 printf(" %18.12g\n", fa.farg[3] * tot.sca);
354 freefargs(&fa);
355 return(0);
356 }
357
358
359 m_spot(fin) /* transform arguments for spotlight */
360 FILE *fin;
361 {
362 double v[3];
363 FUNARGS fa;
364
365 if (readfargs(&fa, fin) <= 0)
366 return(-1);
367 if (fa.nsargs != 0 || fa.nfargs != 7)
368 return(-1);
369 printf("0\n0\n7");
370 printf(" %18.12g %18.12g %18.12g %18.12g\n",
371 fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]);
372 multv3(v, fa.farg+4, tot.xfm);
373 printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
374 freefargs(&fa);
375 return(0);
376 }
377
378
379 m_dielectric(fin) /* transform arguments for dielectric */
380 FILE *fin;
381 {
382 double pow();
383 FUNARGS fa;
384
385 if (readfargs(&fa, fin) <= 0)
386 return(-1);
387 if (fa.nsargs != 0 || fa.nfargs != 5)
388 return(-1);
389 printf("0\n0\n5");
390 printf(" %18.12g %18.12g %18.12g",
391 pow(fa.farg[0], 1.0/tot.sca),
392 pow(fa.farg[1], 1.0/tot.sca),
393 pow(fa.farg[2], 1.0/tot.sca));
394 printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]);
395 freefargs(&fa);
396 return(0);
397 }
398
399
400 m_interface(fin) /* transform arguments for interface */
401 FILE *fin;
402 {
403 double pow();
404 FUNARGS fa;
405
406 if (readfargs(&fa, fin) <= 0)
407 return(-1);
408 if (fa.nsargs != 0 || fa.nfargs != 8)
409 return(-1);
410 printf("0\n0\n8\n");
411 printf("%18.12g %18.12g %18.12g",
412 pow(fa.farg[0], 1.0/tot.sca),
413 pow(fa.farg[1], 1.0/tot.sca),
414 pow(fa.farg[2], 1.0/tot.sca));
415 printf(" %18.12g\n", fa.farg[3]);
416 printf("%18.12g %18.12g %18.12g",
417 pow(fa.farg[4], 1.0/tot.sca),
418 pow(fa.farg[5], 1.0/tot.sca),
419 pow(fa.farg[6], 1.0/tot.sca));
420 printf(" %18.12g\n", fa.farg[7]);
421 freefargs(&fa);
422 return(0);
423 }
424
425
426 text(fin) /* transform text arguments */
427 FILE *fin;
428 {
429 int i;
430 double v[3];
431 FUNARGS fa;
432
433 if (readfargs(&fa, fin) <= 0)
434 return(-1);
435 if (fa.nfargs != 9 && fa.nfargs != 11 && fa.nfargs != 15)
436 return(-1);
437 /* string arguments */
438 printf("%d", fa.nsargs);
439 for (i = 0; i < fa.nsargs; i++)
440 printf(" %s", fa.sarg[i]);
441 printf("\n0\n%d\n", fa.nfargs);
442 /* anchor point */
443 multp3(v, fa.farg, tot.xfm);
444 printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
445 /* right vector */
446 multv3(v, fa.farg+3, tot.xfm);
447 printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
448 /* down vector */
449 multv3(v, fa.farg+6, tot.xfm);
450 printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
451 /* forground and background */
452 if (fa.nfargs == 11)
453 printf(" %18.12g %18.12g\n", fa.farg[9], fa.farg[10]);
454 else if (fa.nfargs == 15) {
455 printf(" %18.12g %18.12g %18.12g\n",
456 fa.farg[9], fa.farg[10], fa.farg[11]);
457 printf(" %18.12g %18.12g %18.12g\n",
458 fa.farg[12], fa.farg[13], fa.farg[14]);
459 }
460 freefargs(&fa);
461 return(0);
462 }
463
464
465 o_source(fin) /* transform source arguments */
466 FILE *fin;
467 {
468 double dv[3];
469 FUNARGS fa;
470
471 if (readfargs(&fa, fin) <= 0)
472 return(-1);
473 if (fa.nsargs != 0 || fa.nfargs != 4)
474 return(-1);
475 /* transform direction vector */
476 multv3(dv, fa.farg, tot.xfm);
477 /* output */
478 printf("0\n0\n4");
479 printf(" %18.12g %18.12g %18.12g %18.12g\n",
480 dv[0], dv[1], dv[2], fa.farg[3]);
481 freefargs(&fa);
482 return(0);
483 }
484
485
486 o_sphere(fin) /* transform sphere arguments */
487 FILE *fin;
488 {
489 double cent[3], rad;
490 FUNARGS fa;
491
492 if (readfargs(&fa, fin) <= 0)
493 return(-1);
494 if (fa.nsargs != 0 || fa.nfargs != 4)
495 return(-1);
496
497 multp3(cent, fa.farg, tot.xfm); /* transform center */
498
499 rad = fa.farg[3] * tot.sca; /* scale radius */
500
501 printf("0\n0\n4");
502 printf(" %18.12g %18.12g %18.12g %18.12g\n",
503 cent[0], cent[1], cent[2], rad);
504 freefargs(&fa);
505 return(0);
506 }
507
508
509 o_face(fin) /* transform face arguments */
510 FILE *fin;
511 {
512 double p[3];
513 register int i;
514 FUNARGS fa;
515
516 if (readfargs(&fa, fin) <= 0)
517 return(-1);
518 if (fa.nsargs != 0 || fa.nfargs % 3)
519 return(-1);
520
521 printf("0\n0\n%d\n", fa.nfargs);
522
523 for (i = 0; i < fa.nfargs; i += 3) {
524 if (reverse)
525 multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm);
526 else
527 multp3(p, fa.farg+i, tot.xfm);
528 printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]);
529 }
530 freefargs(&fa);
531 return(0);
532 }
533
534
535 o_cone(fin) /* transform cone and cup arguments */
536 FILE *fin;
537 {
538 double p0[3], p1[3], r0, r1;
539 FUNARGS fa;
540
541 if (readfargs(&fa, fin) <= 0)
542 return(-1);
543 if (fa.nsargs != 0 || fa.nfargs != 8)
544 return(-1);
545
546 printf("0\n0\n8\n");
547
548 multp3(p0, fa.farg, tot.xfm);
549 multp3(p1, fa.farg+3, tot.xfm);
550 r0 = fa.farg[6] * tot.sca;
551 r1 = fa.farg[7] * tot.sca;
552 printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
553 printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
554 printf(" %18.12g %18.12g\n", r0, r1);
555
556 freefargs(&fa);
557 return(0);
558 }
559
560
561 o_cylinder(fin) /* transform cylinder and tube arguments */
562 FILE *fin;
563 {
564 double p0[3], p1[3], rad;
565 FUNARGS fa;
566
567 if (readfargs(&fa, fin) <= 0)
568 return(-1);
569 if (fa.nsargs != 0 || fa.nfargs != 7)
570 return(-1);
571
572 printf("0\n0\n7\n");
573
574 multp3(p0, fa.farg, tot.xfm);
575 multp3(p1, fa.farg+3, tot.xfm);
576 rad = fa.farg[6] * tot.sca;
577 printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
578 printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
579 printf(" %18.12g\n", rad);
580 freefargs(&fa);
581 return(0);
582 }
583
584
585 o_ring(fin) /* transform ring arguments */
586 FILE *fin;
587 {
588 double p0[3], pd[3], r0, r1;
589 FUNARGS fa;
590
591 if (readfargs(&fa, fin) <= 0)
592 return(-1);
593 if (fa.nsargs != 0 || fa.nfargs != 8)
594 return(-1);
595
596 printf("0\n0\n8\n");
597
598 multp3(p0, fa.farg, tot.xfm);
599 multv3(pd, fa.farg+3, tot.xfm);
600 r0 = fa.farg[6] * tot.sca;
601 r1 = fa.farg[7] * tot.sca;
602 printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
603 printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]);
604 printf(" %18.12g %18.12g\n", r0, r1);
605 freefargs(&fa);
606 return(0);
607 }
608
609
610 initotypes() /* initialize ofun[] array */
611 {
612 extern int o_source();
613 extern int o_sphere();
614 extern int o_face();
615 extern int o_cone();
616 extern int o_cylinder();
617 extern int o_ring();
618 extern int m_glow();
619 extern int m_spot();
620 extern int m_dielectric();
621 extern int m_interface();
622 extern int text();
623 extern int alias();
624 extern int passargs();
625 extern int addxform();
626 register int i;
627
628 if (ofun[OBJ_SOURCE].funp == o_source)
629 return; /* done already */
630 /* alias is additional */
631 ofun[ALIAS].funame = ALIASID;
632 ofun[ALIAS].flags = 0;
633 /* functions get new transform */
634 for (i = 0; i < NUMTYPES; i++)
635 if (hasfunc(i))
636 ofun[i].funp = addxform;
637 /* special cases */
638 ofun[OBJ_SOURCE].funp = o_source;
639 ofun[OBJ_SPHERE].funp =
640 ofun[OBJ_BUBBLE].funp = o_sphere;
641 ofun[OBJ_FACE].funp = o_face;
642 ofun[OBJ_CONE].funp =
643 ofun[OBJ_CUP].funp = o_cone;
644 ofun[OBJ_CYLINDER].funp =
645 ofun[OBJ_TUBE].funp = o_cylinder;
646 ofun[OBJ_RING].funp = o_ring;
647 ofun[OBJ_INSTANCE].funp = addxform;
648 ofun[MAT_GLOW].funp = m_glow;
649 ofun[MAT_SPOT].funp = m_spot;
650 ofun[MAT_DIELECTRIC].funp = m_dielectric;
651 ofun[MAT_INTERFACE].funp = m_interface;
652 ofun[PAT_CTEXT].funp =
653 ofun[PAT_BTEXT].funp =
654 ofun[MIX_TEXT].funp = text;
655 ofun[ALIAS].funp = alias;
656 }